130 lines
4.6 KiB
C
130 lines
4.6 KiB
C
/*
|
|
* fwnode.h - Firmware device node object handle type definition.
|
|
*
|
|
* Copyright (C) 2015, Intel Corporation
|
|
* Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#ifndef _LINUX_FWNODE_H_
|
|
#define _LINUX_FWNODE_H_
|
|
|
|
#include <linux/types.h>
|
|
|
|
struct fwnode_operations;
|
|
struct device;
|
|
|
|
struct fwnode_handle {
|
|
struct fwnode_handle *secondary;
|
|
const struct fwnode_operations *ops;
|
|
};
|
|
|
|
/**
|
|
* struct fwnode_endpoint - Fwnode graph endpoint
|
|
* @port: Port number
|
|
* @id: Endpoint id
|
|
* @local_fwnode: reference to the related fwnode
|
|
*/
|
|
struct fwnode_endpoint {
|
|
unsigned int port;
|
|
unsigned int id;
|
|
const struct fwnode_handle *local_fwnode;
|
|
};
|
|
|
|
#define NR_FWNODE_REFERENCE_ARGS 8
|
|
|
|
/**
|
|
* struct fwnode_reference_args - Fwnode reference with additional arguments
|
|
* @fwnode:- A reference to the base fwnode
|
|
* @nargs: Number of elements in @args array
|
|
* @args: Integer arguments on the fwnode
|
|
*/
|
|
struct fwnode_reference_args {
|
|
struct fwnode_handle *fwnode;
|
|
unsigned int nargs;
|
|
unsigned int args[NR_FWNODE_REFERENCE_ARGS];
|
|
};
|
|
|
|
/**
|
|
* struct fwnode_operations - Operations for fwnode interface
|
|
* @get: Get a reference to an fwnode.
|
|
* @put: Put a reference to an fwnode.
|
|
* @device_get_match_data: Return the device driver match data.
|
|
* @property_present: Return true if a property is present.
|
|
* @property_read_integer_array: Read an array of integer properties. Return
|
|
* zero on success, a negative error code
|
|
* otherwise.
|
|
* @property_read_string_array: Read an array of string properties. Return zero
|
|
* on success, a negative error code otherwise.
|
|
* @get_parent: Return the parent of an fwnode.
|
|
* @get_next_child_node: Return the next child node in an iteration.
|
|
* @get_named_child_node: Return a child node with a given name.
|
|
* @get_reference_args: Return a reference pointed to by a property, with args
|
|
* @graph_get_next_endpoint: Return an endpoint node in an iteration.
|
|
* @graph_get_remote_endpoint: Return the remote endpoint node of a local
|
|
* endpoint node.
|
|
* @graph_get_port_parent: Return the parent node of a port node.
|
|
* @graph_parse_endpoint: Parse endpoint for port and endpoint id.
|
|
*/
|
|
struct fwnode_operations {
|
|
struct fwnode_handle *(*get)(struct fwnode_handle *fwnode);
|
|
void (*put)(struct fwnode_handle *fwnode);
|
|
bool (*device_is_available)(const struct fwnode_handle *fwnode);
|
|
void *(*device_get_match_data)(const struct fwnode_handle *fwnode,
|
|
const struct device *dev);
|
|
bool (*property_present)(const struct fwnode_handle *fwnode,
|
|
const char *propname);
|
|
int (*property_read_int_array)(const struct fwnode_handle *fwnode,
|
|
const char *propname,
|
|
unsigned int elem_size, void *val,
|
|
size_t nval);
|
|
int
|
|
(*property_read_string_array)(const struct fwnode_handle *fwnode_handle,
|
|
const char *propname, const char **val,
|
|
size_t nval);
|
|
struct fwnode_handle *(*get_parent)(const struct fwnode_handle *fwnode);
|
|
struct fwnode_handle *
|
|
(*get_next_child_node)(const struct fwnode_handle *fwnode,
|
|
struct fwnode_handle *child);
|
|
struct fwnode_handle *
|
|
(*get_named_child_node)(const struct fwnode_handle *fwnode,
|
|
const char *name);
|
|
int (*get_reference_args)(const struct fwnode_handle *fwnode,
|
|
const char *prop, const char *nargs_prop,
|
|
unsigned int nargs, unsigned int index,
|
|
struct fwnode_reference_args *args);
|
|
struct fwnode_handle *
|
|
(*graph_get_next_endpoint)(const struct fwnode_handle *fwnode,
|
|
struct fwnode_handle *prev);
|
|
struct fwnode_handle *
|
|
(*graph_get_remote_endpoint)(const struct fwnode_handle *fwnode);
|
|
struct fwnode_handle *
|
|
(*graph_get_port_parent)(struct fwnode_handle *fwnode);
|
|
int (*graph_parse_endpoint)(const struct fwnode_handle *fwnode,
|
|
struct fwnode_endpoint *endpoint);
|
|
};
|
|
|
|
#define fwnode_has_op(fwnode, op) \
|
|
((fwnode) && (fwnode)->ops && (fwnode)->ops->op)
|
|
#define fwnode_call_int_op(fwnode, op, ...) \
|
|
(fwnode ? (fwnode_has_op(fwnode, op) ? \
|
|
(fwnode)->ops->op(fwnode, ## __VA_ARGS__) : -ENXIO) : \
|
|
-EINVAL)
|
|
#define fwnode_call_bool_op(fwnode, op, ...) \
|
|
(fwnode ? (fwnode_has_op(fwnode, op) ? \
|
|
(fwnode)->ops->op(fwnode, ## __VA_ARGS__) : false) : \
|
|
false)
|
|
#define fwnode_call_ptr_op(fwnode, op, ...) \
|
|
(fwnode_has_op(fwnode, op) ? \
|
|
(fwnode)->ops->op(fwnode, ## __VA_ARGS__) : NULL)
|
|
#define fwnode_call_void_op(fwnode, op, ...) \
|
|
do { \
|
|
if (fwnode_has_op(fwnode, op)) \
|
|
(fwnode)->ops->op(fwnode, ## __VA_ARGS__); \
|
|
} while (false)
|
|
|
|
#endif
|